If you're on the move regularly or your hard drive is accessible by third
parties then it's always vulnerable to attack, or open to spying by prying
eyes. One way to prevent such compromises is by encrypting data. TrueCrypt
aims to do this by allowing you to encrypt data 'on-the-fly'. This means that
data is automatically encrypted or decrypted immediately before it is loaded
or saved. Nothing can be encrypted or decrypted without using the correct
password or encryption keys. This encryption extends to entire file systems
such as file names, folder names, file contents, free disk space etc. The
good thing about TrueCrypt is that it doesn't get in the way of you dragging
and dropping files. Some encryption programs that work on-the-fly prevent you
from doing so easily or add a delay to the transfer but that's not the case
with TrueCrypt. The other good thing is that TrueCrypt never saves any
decrypted data to a disk – it only stores them temporarily in your RAM.
This is far more secure because when you restart your Mac or turn off your
computer, the volume will be dismounted and files stored in it will be
inaccessible and still encrypted. TrueCrypt takes you through the encryption
process step-by-step via a handy wizard. Just select the volume that you'd
like to encrypt and then click 'Create Volume' to encrypt it. This will
create a TrueCrypt 'container', which acts like normal file or folder but of
course, it's totally encrypted. Note that if you select an existing file,
TrueCrypt will not encrypt it - rather it will delete and replace it with a
container. *For a free application, TrueCrypt is remarkably powerful and will
be easy enough even for beginners to encrypt their hard drive.*Download
*TrueCrypt 7.1* in Softonic
